English: The Imperial Crown of the Holy Roman Empire is the crown of the King of the Romans, the rulers of the German Kingdom, since the High Middle Ages. Most of the kings were crowned with it. It was made probably somewhere in Western Germany, either under Otto I (with additions by Conrad II), under Conrad II, or under Conrad III during the late 10th century. The first preserved mention of it is from the 12th century — assuming it is the same crown, which seems very probable.